193 lines
6.0 KiB
C
193 lines
6.0 KiB
C
/*
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* Copyright (c) University of British Columbia, 1984
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Laboratory for Computation Vision and the Computer Science Department
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* of the University of British Columbia.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)pk.h 7.8 (Berkeley) 4/30/91
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*/
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/*
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*
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* X.25 Packet Level Definitions:
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*
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*/
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/* Packet type identifier field defintions. */
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#define X25_CALL 11
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#define X25_CALL_ACCEPTED 15
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#define X25_CLEAR 19
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#define X25_CLEAR_CONFIRM 23
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#define X25_DATA 0
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#define X25_INTERRUPT 35
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#define X25_INTERRUPT_CONFIRM 39
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#define X25_RR 1
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#define X25_RNR 5
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#define X25_REJECT 9
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#define X25_RESET 27
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#define X25_RESET_CONFIRM 31
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#define X25_DIAGNOSTIC 241
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#define X25_RESTART 251
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#define X25_RESTART_CONFIRM 255
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/* Restart cause field definitions. */
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#define X25_RESTART_LOCAL_PROCEDURE_ERROR 1
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#define X25_RESTART_NETWORK_CONGESTION 3
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#define X25_RESTART_NETWORK_OPERATIONAL 7
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/* Miscellaneous definitions. */
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#define DATA_PACKET_DESIGNATOR 0x01
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#define RR_OR_RNR_PACKET_DESIGNATOR 0x02
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#define RR_PACKET_DESIGNATOR 0x04
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#define DEFAULT_WINDOW_SIZE 2
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#define MODULUS 8
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#define ADDRLN 1
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#define MAXADDRLN 15
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#define FACILITIESLN 1
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#define MAXFACILITIESLN 10
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#define MAXUSERDATA 16
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#define MAXCALLINFOLN 1+15+1+10+16
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#define PACKET_OK 0
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#define IGNORE_PACKET 1
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#define ERROR_PACKET 2
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typedef char bool;
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#define FALSE 0
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#define TRUE 1
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/*
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* X.25 Packet format definitions
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* This will eventually have to be rewritten without reference
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* to bit fields, to be ansi C compliant and allignment safe.
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*/
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#if BYTE_ORDER == BIG_ENDIAN
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#define ORDER2(a, b) a , b
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#define ORDER4(a, b, c, d) a , b , c , d
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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#define ORDER2(a, b) b , a
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#define ORDER4(a, b, c, d) d , c , b , a
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#endif
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typedef u_char octet;
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struct x25_calladdr {
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octet ORDER2(calling_addrlen:4, called_addrlen:4);
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octet address_field[MAXADDRLN];
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};
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struct x25_packet {
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octet ORDER4(q_bit:1, d_bit:1, fmt_identifier:2, lc_group_number:4);
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octet logical_channel_number;
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octet packet_type;
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octet packet_data;
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};
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struct data_packet {
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octet ORDER4(pr:3, m_bit:1, ps:3, z:1);
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};
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#define FACILITIES_REVERSE_CHARGE 0x1
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#define FACILITIES_THROUGHPUT 0x2
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#define FACILITIES_PACKETSIZE 0x42
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#define FACILITIES_WINDOWSIZE 0x43
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#define PKHEADERLN 3
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#define PR(xp) (((struct data_packet *)&xp -> packet_type)->pr)
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#define PS(xp) (((struct data_packet *)&xp -> packet_type)->ps)
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#define MBIT(xp) (((struct data_packet *)&xp -> packet_type)->m_bit)
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#define LCN(xp) (xp -> logical_channel_number + \
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(xp -> lc_group_number ? (xp -> lc_group_number >> 8) : 0))
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#define SET_LCN(xp, lcn) ((xp -> logical_channel_number = lcn), \
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(xp -> lc_group_number = lcn > 255 ? lcn >> 8 : 0))
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struct mbuf *pk_template ();
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/* Define X.25 packet level states. */
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/* Call setup and clearing substates. */
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#define LISTEN 0
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#define READY 1
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#define RECEIVED_CALL 2
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#define SENT_CALL 3
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#define DATA_TRANSFER 4
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#define RECEIVED_CLEAR 5
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#define SENT_CLEAR 6
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/* DTE states. */
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#define DTE_WAITING 7
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#define DTE_RECEIVED_RESTART 8
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#define DTE_SENT_RESTART 9
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#define DTE_READY 0
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#define MAXSTATES 10
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/*
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* The following definitions are used in a switch statement after
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* determining the packet type. These values are returned by the
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* pk_decode procedure.
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*/
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#define CALL 0 * MAXSTATES
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#define CALL_ACCEPTED 1 * MAXSTATES
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#define CLEAR 2 * MAXSTATES
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#define CLEAR_CONF 3 * MAXSTATES
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#define DATA 4 * MAXSTATES
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#define INTERRUPT 5 * MAXSTATES
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#define INTERRUPT_CONF 6 * MAXSTATES
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#define RR 7 * MAXSTATES
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#define RNR 8 * MAXSTATES
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#define RESET 9 * MAXSTATES
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#define RESET_CONF 10 * MAXSTATES
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#define RESTART 11 * MAXSTATES
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#define RESTART_CONF 12 * MAXSTATES
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#define REJECT 13 * MAXSTATES
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#define DIAG_TYPE 14 * MAXSTATES
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#define INVALID_PACKET 15 * MAXSTATES
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#define DELETE_PACKET INVALID_PACKET
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